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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Caddisfly Species Hesperophylax designatus (Silver Striped Sedges)

Where & when

This species is abundant nationwide. It was once considered to be an East/Midwest species, but a widespread western species Hesperophylax incisus is now considered to be a synonym of designatus.

In 112 records from GBIF, adults of this species have mostly been collected during July (22%), June (21%), August (21%), May (14%), September (8%), and April (7%).

In 74 records from GBIF, this species has been collected at elevations ranging from 3 to 11926 ft, with an average (median) of 5741 ft.

Species Range

Specimens of the Caddisfly Species Hesperophylax designatus

1 Female Adult

Start a Discussion of Hesperophylax designatus


Caddisfly Species Hesperophylax designatus (Silver Striped Sedges)

Species Range
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